Collapsable Form Sections

http://marcoamoedo.com/blog/collapsable-form-sections-ndash-a-bit-of-the-future-in-crm-4/

function getElementsByCondition(condition, container) {
container = container || document;
var all = container.all || container.getElementsByTagName('*');
var arr = [];
for (var k = 0; k < all.length; k++) {
var elm = all[k];
if (condition(elm, k))
arr[arr.length] = elm;
}
return arr;
}
function attachCollapsableToSections() {
var sections = getElementsByCondition(function (elm) { if (elm.className.indexOf("ms-crm-Form-Section") != -1) return true; }, null);
for (var i = 0; i < sections.length; i++) {
sections[i].innerHTML = '<img alt="Expanded, click to collapse" src="/_imgs/navup.gif" style="cursor:hand;"/>' + sections[i].innerHTML;
sections[i].childNodes[0].attachEvent('onclick', toggleVisibility);
}
}
function toggleVisibility(e) {
var sectionContainer = e.srcElement.parentNode.parentNode.parentNode;
var elements = getElementsByCondition(function (elm) { if (elm.vAlign == "top") return true; }, sectionContainer);
for (var i = 0; i < elements.length; i++) {
if (elements[i].style.display == "none") {
elements[i].style.display = "";
e.srcElement.src = e.srcElement.src.replace("navdown", "navup");
}
else {
elements[i].style.display = "none";
e.srcElement.src = e.srcElement.src.replace("navup", "navdown");
}
}
}
attachCollapsableToSections();